EP2193108A2 - Procédé de fabrication de ciments portland au laitier et d'un ciment de haut-fourneau - Google Patents

Procédé de fabrication de ciments portland au laitier et d'un ciment de haut-fourneau

Info

Publication number
EP2193108A2
EP2193108A2 EP08802548A EP08802548A EP2193108A2 EP 2193108 A2 EP2193108 A2 EP 2193108A2 EP 08802548 A EP08802548 A EP 08802548A EP 08802548 A EP08802548 A EP 08802548A EP 2193108 A2 EP2193108 A2 EP 2193108A2
Authority
EP
European Patent Office
Prior art keywords
mill
cement
entry
grinding
classifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08802548A
Other languages
German (de)
English (en)
Inventor
Paul Clemens
Dietmar Espig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Holcim Technology Ltd
Original Assignee
Holcim Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holcim Technology Ltd filed Critical Holcim Technology Ltd
Publication of EP2193108A2 publication Critical patent/EP2193108A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/48—Clinker treatment
    • C04B7/52—Grinding ; After-treatment of ground cement
    • C04B7/527—Grinding ; After-treatment of ground cement obtaining cements characterised by fineness, e.g. by multi-modal particle size distribution
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
    • C04B2111/1075—Chromium-free or very low chromium-content materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the invention relates to a method for the production of Portland hut cements and blast furnace cement according to claim 1.
  • Portland cement is known to be ground from clinker.
  • the clinker is introduced together with a sulphate carrier, for example gypsum, in a cement mill, for example a good bed roller mill.
  • a sulphate carrier for example gypsum
  • CEM I 32.5 R the class of cement
  • CEM I 42.5 R the class of cement
  • CEM I 52.5 R the class of cement
  • the latter is the one with the highest strength in the listed Portland cements
  • it is also known to mill in two stages. Two-stage milling processes are also used to achieve higher mass flow rates coupled with significant energy savings. In a first milling stage, e.g.
  • a good bed roller mill in circuit with a dynamic sifter.
  • the discharge of the dynamic classifier is entered in the entry e.g. a ball mill as a second grinding step, which works in conjunction with another cyclic classifier in the circuit.
  • the separated from the classifier finished product is discharged into appropriate reservoirs. Insufficiently comminuted regrind is thus guided to the entry of the second grinding stage.
  • Mahlkugel supportiven results on the one hand from a different grinding resistance - for example from clinker about 12-16 kWh / t and of granulated slag about 18-22 kWh / t - and on the other hand from the upper grain size of the feed.
  • Clinker is much coarser than, for example, granulated blastfurnace slag, which is very large grinding balls at the mill entry of a first grinding stage with 90 to 100 mm diameter required.
  • a second grinding stage is able to work with balls of 30 to 20 mm diameter at the mill entry and 12 mm diameter at the discharge. It goes without saying that the ball diameter should decrease in the direction of the mill discharge.
  • Portland cement is ground in one or two stages using one or two mills. With the help of one or two mills, a multi-component cement can also be produced. The components are ground either together or separately, in the latter case, a separate mixing stage is provided. For the grinding systems described a considerable amount of energy is required.
  • a grinding plant which includes a pre-mill, in particular a good-bed roller mill, a first classifier for sighting in the Milled crushed material in a coarser and a finer fraction, a second classifier for sifting at least the finer fraction of the first classifier in coarse and fine material and a fine mill, in particular a ball mill, for grinding the coarse material of the second classifier has.
  • the fine mill and the second classifier are connected via a conveying device which mechanically transports the material up to the second classifier.
  • the invention has for its object to provide a method for the production of Portlandchristnzement and blast furnace cements, which can be carried out on energy-saving and the use value of the cement increasing manner.
  • Portland cement clinker for grinding in a first mill the cement mill, registered.
  • the Austragsgut the cement mill is given directly and / or via an intermediate reservoir in the entry of a dynamic classifier with preferably predetermined separation section.
  • the coarse material of the dynamic classifier is given to the entry of a mill.
  • granulated blastfurnace or granulated bread is additionally added.
  • the material to be removed from the dynamic sifter is added to the feed of a second mill for fine grinding.
  • the output material of the second mill is added to the entry of the dynamic classifier.
  • Sulfate carrier is fed either to the entry of the first mill, the entry of the dynamic classifier or the entry of the second mill.
  • the fines of the dynamic classifier are fed to a reservoir.
  • this clinker flour with a fineness corresponding to the Portland cement is provided, this clinker flour together with a dried finely divided sulphate carrier will be added to the sifter.
  • slag sand mills or cement mills can be considered.
  • a vertical roller mill or a circulating ball mill can be used.
  • Portland cement of the class CEM I 52.5 R from the classes CEM I 42.5 R or CEM I 32.5 R is grinded.
  • a special cement of a high degree of fineness can also be obtained.
  • the peculiarity of the method according to the invention is that the Portland cement is first fed to a dynamic sifter for a subsequent grinding, so that only the resulting classifier seed feeds the mill entry.
  • Sulphate carrier can be ground together with clinker in the first mill.
  • sulphate carrier is fed to the entry of the dynamic classifier.
  • sulfate carrier is added to the entry of the second mill.
  • an existing granulated blast-furnace sand mill which is better-greased for fine comminution, is used for refining, whose ball diameters are graduated, for example, from 40 mm to 17 mm.
  • the process can be realized by a second stage for post-crushing in-use cement mill not at the entry of the mill, but according to the invention entry with, for example, a Vorzement (clinker flour plus finely divided sulfate carrier, dry) or with a Portland cement class CEM I 42.5 R or CEM I 32.5 R is charged.
  • the possible ball diameters are between 25 mm and 12 mm or smaller. A higher energy efficiency is the result.
  • FIG. 1 shows a block diagram of a two-stage grinding process according to the invention.
  • FIG. 1 shows a two-stage grinding plant. From a clinker silo 20 and a sulphate carrier or gypsum silo 22, the materials to be milled are introduced into a first mill 24, which may be a ball mill, a good bed roller or a vertical roller mill. The output 25 of the mill 24 goes to the entry of a dynamic classifier 26. Its coarse grain returns at 28 to the entry of the first mill 24. The fines discharge 27 of the dynamic classifier 26 is based on a dynamic classifier 30. Alternatively, the discharging fines 27 of the classifier 26 in a silo 32, which is also connected to the entry of the dynamic classifier 30.
  • a first mill 24 which may be a ball mill, a good bed roller or a vertical roller mill.
  • the output 25 of the mill 24 goes to the entry of a dynamic classifier 26. Its coarse grain returns at 28 to the entry of the first mill 24.
  • the fines discharge 27 of the dynamic classifier 26 is based on a dynamic class
  • the coarse grain 39 from the dynamic classifier 30 enters the entry of the mill 40, which may be, for example, a ball mill, a vertical roller mill, or a stirred ball mill.
  • the Kugelmühlengattierung is in this case for a fine and Feinstzerkleintation designed.
  • the discharge of the mill 40 passes at 41 in the entry of the dynamic classifier 30.
  • the fines of the dynamic classifier 30 is entered via the conveyor line 31 in a cement silo 42.
  • This fine material is Portlandchristnzement or blast furnace cement high degree of fineness, which can be adjusted via the dynamic classifier 30 and the mill 40.
  • the energy to be expended for the described process is significantly reduced in relation to conventional grinding plants.
  • the balanced fine grinding mill for cement grinding consists of a single-chamber tubular ball mill 3.6 m Dmr. x 10.5m in length.
  • Table 1 contains the essential parameters for the above embodiments.
  • the required output data is taken from the recorded reference state (*), s. Table 1, column 2, and the Mahllesskennkurven the components, for example according to Zeisel or Bondtest.
  • a predictive calculation model is used to calculate the grinding plant within the flowchart simulation.
  • a suitable parameterized map is used to calculate the classifier flows: Particle size and unaddressed proportion as a function of feed fineness, load and classifier speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Food Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

La présente invention concerne un procédé de fabrication de ciment Portland au laitier et de ciment de haut fourneau au moyen d'un broyage à deux niveaux comportant les étapes suivantes : a) l'introduction du clinker de ciment Portland dans un premier broyeur, le broyeur à ciment (24), pour un broyage préalable ; b) le versement de la matière finale du broyeur à ciment dans l'entrée d'un séparateur dynamique directement et/ou par le biais d'un réservoir intermédiaire ; c) l'ajout de farine ou de semoule de laitier granulé dans l'entrée du séparateur dynamique ; d) le versement des grosses particules déchargées du séparateur dynamique dans l'entrée d'un second broyeur pour un broyage fin ; e) le versement de la matière finale du second broyeur dans l'entrée du séparateur dynamique ; et f) l'acheminement d'un support à base de sulfate dans le premier broyeur, dans l'entrée du séparateur dynamique ou dans l'entrée du second broyeur ; et g) l'acheminement des particules fines du séparateur dynamique vers un réservoir.
EP08802548A 2007-09-29 2008-09-24 Procédé de fabrication de ciments portland au laitier et d'un ciment de haut-fourneau Withdrawn EP2193108A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007046834A DE102007046834B4 (de) 2007-09-29 2007-09-29 Verfahren zur Herstellung von Hüttensandmehl enthaltenden Zementen
PCT/EP2008/008066 WO2009043510A2 (fr) 2007-09-29 2008-09-24 Procédé de fabrication de ciments portland au laitier et d'un ciment de haut fourneau

Publications (1)

Publication Number Publication Date
EP2193108A2 true EP2193108A2 (fr) 2010-06-09

Family

ID=40070612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08802548A Withdrawn EP2193108A2 (fr) 2007-09-29 2008-09-24 Procédé de fabrication de ciments portland au laitier et d'un ciment de haut-fourneau

Country Status (8)

Country Link
US (1) US20100242805A1 (fr)
EP (1) EP2193108A2 (fr)
AU (1) AU2008306222A1 (fr)
BR (1) BRPI0817617A2 (fr)
CA (1) CA2701139A1 (fr)
DE (1) DE102007046834B4 (fr)
MX (1) MX2010003507A (fr)
WO (1) WO2009043510A2 (fr)

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Publication number Priority date Publication date Assignee Title
CN102211358B (zh) * 2010-12-30 2015-12-16 何玉成 一种级配砂料的制备方法及实施该方法的构造
DE102011008967B4 (de) 2011-01-12 2014-10-30 Khd Humboldt Wedag Gmbh Anlage zur Herstellung von Zement mit zentraler Mahleinheit
JP2015501720A (ja) 2011-12-16 2015-01-19 ラファルジュ 粉砕方法、粉砕設備及び関連する水硬性結合剤の製造方法
PL2794129T3 (pl) * 2011-12-22 2021-12-27 Sika Technology Ag Zwiększenie efektywności urządzeń do separacji wielkości cząstek substancji stałych
TR201809521T4 (tr) 2014-07-28 2018-07-23 Heidelbergcement Ag Çimento klinkeri öğütme yöntemi.
CN106348629B (zh) * 2016-08-25 2018-02-23 嘉华特种水泥股份有限公司 一种水泥粉磨制备工艺
DK3326720T3 (da) 2016-11-23 2022-01-10 Loesche Gmbh Fremgangsmåde til behandling af flerfase mineralske råmaterialer
DE102017115994A1 (de) 2017-07-17 2019-01-17 Thyssenkrupp Ag Zweistufiger Mahlkreislauf und Verfahren zur Herstellung eines gemahlenen Produkts mittels einer zweistufigen Mahlung
DE102017117985A1 (de) 2017-08-08 2019-02-14 Thyssenkrupp Ag Verfahren und Anlage zur Herstellung von Zement
IT201800020080A1 (it) * 2018-12-18 2020-06-18 Heidelbergcement Ag Miscela cementizia per stampante 3D, a prestazioni migliorate, e relativo uso in detta stampante

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US3490702A (en) * 1966-10-24 1970-01-20 D Ore Mills Inc Method of accelerating production of portland cement and similar material
FR2329350A1 (fr) * 1975-10-28 1977-05-27 Inst Tsementnoi Promy Broyeur a projection
DE3138342C2 (de) * 1981-09-26 1983-10-06 Portland-Zementwerk Wotan, H. Schneider Kg, 5531 Ahuette Trockenverfahren zur Herstellung von Zement
DE3334235A1 (de) * 1982-11-04 1984-05-10 Heinz 4630 Bochum Jäger Verfahren und vorrichtung zur energiesparenden herstellung eines feingutes, insbesondere zement
DE3843338A1 (de) * 1988-12-22 1990-06-28 Krupp Polysius Ag Sichter
DE8916267U1 (de) * 1989-02-20 1996-08-08 Klöckner-Humboldt-Deutz AG, 51063 Köln Sichter zum Sichten von körnigem Gut und Mahlanlage mit Einschaltung eines solchen Sichters
IT1248066B (it) * 1991-06-17 1995-01-05 Italcementi Spa Separatore dinamico per materiali polverulenti, in particolare cementoed impianto che lo comprende
AU6206594A (en) * 1993-03-03 1994-09-26 Slegten Societe Anonyme Control process for closed-circuit dry-method grinder
DE4320025A1 (de) * 1993-06-17 1994-12-22 Krupp Polysius Ag Mahlanlage und Verfahren zum Mahlen und Sichten von sprödem Mahlgut
DE19514971A1 (de) * 1994-04-27 1995-11-02 Heinz Jaeger Verfahren und Anlage zur energiesparenden Herstellung eines Feingutes
DE19828326A1 (de) * 1998-06-25 1999-12-30 Alsen Ag Hüttensandhaltiges Bindemittel, insbesondere Zement
EP0995726A1 (fr) * 1998-10-19 2000-04-26 E. Schwenk Zementwerke KG Procédé et dispositif pour la fabrication de ciment hydraulique
CZ292488B6 (cs) * 1999-03-18 2003-10-15 Psp Engineering A. S. Způsob mletí materiálů s rozdílnou zrnitostí
DE10119977A1 (de) * 2001-04-24 2002-10-31 Kloeckner Humboldt Wedag Verfahren und Anlage zur Herstellung von Zementklinker

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Also Published As

Publication number Publication date
US20100242805A1 (en) 2010-09-30
WO2009043510A3 (fr) 2009-06-18
CA2701139A1 (fr) 2009-04-09
MX2010003507A (es) 2010-08-02
DE102007046834A1 (de) 2009-04-02
DE102007046834B4 (de) 2010-01-14
WO2009043510A2 (fr) 2009-04-09
BRPI0817617A2 (pt) 2015-03-31
AU2008306222A1 (en) 2009-04-09

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